JPH116385A - Ground drilling machine - Google Patents

Abstract

(57) [Problem] To provide a ground drilling machine capable of greatly reducing the weight of the entire ground drilling machine by making the base side weight as light as possible. SOLUTION: A base 11 supporting a drilling machine main body 4 is bridged between a pair of left and right steel pipe side frames 12, 12, a pair of front and rear steel pipe connection frames 13, 14, and a pair of front and rear connection frames 13, 14. A movable frame 2 formed by a pair of left and right steel pipe guide rails 15, 15, which can be moved back and forth by being guided by the two guide rails 15, 15 of the base 11.
2, the drilling machine body 4 is pivotally attached to the front end of the movable frame 22, and a tilting cylinder 27 for tilting the drilling machine body 4 is interposed between the drilling machine body 4 and the movable frame 22; A movable frame moving cylinder 28 is interposed between the movable frame 22 and the rear connection frame 14 of the base 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground drilling machine which punches a boring rod into a horizontal plane or a slope of the ground while repeatedly hitting the boring rod while rotating the boring rod by a rotary hitting device of a drilling machine body. The present invention relates to improvement, and more particularly to improvement of a base-side structure for supporting a drilling machine main body.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional ground drilling machine has a base 1 which is framed in a plane, and a rising arm 2 is provided at the rear end of the base. , A starting cylinder 3 is interposed between the arm 2 and the base 1, and a drilling machine main body 4 is pivotally mounted on a tip end of the rising arm 2, and the drilling machine is Body 4
A cylinder 5 for tilting the drilling machine main body is interposed between the arm and the rising arm 2.

[0003]

According to the above structure, when the drilling machine is used, a large load is concentrated on the rear end side of the base 1 on which the starting arm 2 is pivotally mounted. Therefore, in order to stabilize the base 1, it is necessary to make the base 1 a heavy-weight structure, which makes the whole ground drilling machine very heavy, and the concentrated load is reduced by the rear end of the base 1. However, there is a drawback that the rear end side of the base is damaged in a relatively short time because it is always applied to the base.

SUMMARY OF THE INVENTION In view of the above problems, the present invention makes it possible to reduce the weight of the base as much as possible to greatly reduce the weight of the entire ground drilling machine and extend the life of the base. It is an object to provide a ground drill.

[0005]

According to a first aspect of the present invention, there is provided a ground drilling machine comprising: a base 11 for supporting a drilling machine main body 4; a pair of left and right steel pipe side frames 12; And a pair of front and rear steel pipe connecting frames 13 and 14 for connecting the front end and the rear end of the front frame 12 respectively, and both front and rear connecting frames 1 inside the side frames 12 and 12.
A movable frame 22 is formed integrally with a pair of left and right steel pipe guide rails 15 and 15 bridged between the base rails 3 and 14 and is movable forward and backward by being guided by the two guide rails 15 and 15 of the base 11. The drilling machine main body 4 is pivotally mounted on the front end of the movable frame 22, and a tilting cylinder 27 for tilting the drilling machine main body 4 about the pivotal connection is provided between the drilling machine main body 4 and the movable frame 22. The movable frame 22 and the base 1
The movable frame moving cylinder 28 is interposed between the rear frame 1 and the rear side connecting frame 14.

According to a second aspect, in the ground drilling machine according to the first aspect, the movable frame 22 includes a guide wheel 25 comprising a pair of upper and lower sandwiching rollers 24, 24 which sandwiches and rolls the steel pipe guide rail 15. It is characterized in that it is provided in at least four places in front, back, left and right.

A third aspect of the present invention is the soil drilling machine according to the first or second aspect, wherein the steel pipe forming the side frame 12, the connection frames 13, 14 and the guide rail 15 is a scaffold steel pipe. .

[0008]

1 to 3 show a soil drilling machine according to the present invention. FIG. 1 is a side view of the entire ground drilling machine, FIG. 2 is a partially omitted front view, and FIG. It is a perspective view which shows a principal part. This ground drilling machine has a drilling machine main body 4 and a base 11 that supports the drilling machine main body 4. Drilling machine body 4
As shown in FIG. 1, a rotary hitting device 7 for repeatedly hitting while rotating a boring rod 6, a guide cell 8 for guiding and supporting the rotary hitting device 7 and the boring rod 6 in a digging direction, Is pivotally attached to the base 11 so as to be tiltable, and supports a guide cell 8 so as to be slidable in a longitudinal direction, and a guide cell expansion / contraction adjustment interposed between the support frame 9 and the guide cell 8. And a hydraulic cylinder 10.

The base 11 is integrally formed with a frame using steel pipes. As can be seen from FIG. 3, a pair of left and right steel pipe side frames 12, 12 are provided.
A pair of front and rear steel pipe connection frames 13 and 14 for connecting the front end and the rear end of both side frames 12 and 12 respectively.
And a pair of left and right steel pipe guide rails 15, 15 spanned between the front and rear connection frames 13, 14 inside the both side frames 12, 12.

Each side frame 12 has a frame body 16 formed by bending a steel pipe into a long rectangular frame in the front and rear direction.
And vertical rods 17 made of steel pipes, which are respectively disposed at both front and rear ends of the rectangular frame body 16. The front and rear connecting frames 13 and 14 include upper and lower steel pipe horizontal rods 18 and
18 and vertical rods 19, 19 connecting both horizontal rods 18, 18. Both ends of the upper horizontal rod 18 are side frames 12,
The twelve vertical rods 17, 17 and the lower horizontal rod 18 are connected to the frame body 16 of the side frames 12, 12, respectively. Both ends of each of the steel pipe guide rails 15 are connected to upper horizontal bars 18, 18 of front and rear connection frames 13, 14.
In addition, the frame body 1 of both side frames 12, 12
6 and 16 each include a steel pipe middle rod 2 between the lower central portions thereof.
The intermediate rod 20 and each guide rail 15 are connected by a steel pipe vertical rod 21.

The base 11 made of steel pipe formed as described above.
Is provided with a movable frame 22 that is guided by a pair of left and right guide rails 15 and 15 and that can move back and forth. A pair of upper and lower shafts 2 are respectively provided at both front and rear ends of the movable frame 22.
3 and 23 are fixed, and each pair of front and rear shafts 2
A pair of upper and lower sandwiching rollers 24, 24 that sandwich and roll the steel pipe guide rails 15 are rotatably attached to both ends of the guide rails 3, 23, and each pair of sandwiching rollers 24 constitutes a guide wheel 25. Guide wheels 25 are provided at four positions in front, rear, left and right of the movable frame 22. And this movable frame 2
2 can be moved back and forth between the position shown by the solid line in FIG. 1 and the position shown by the imaginary line by the front and rear guide wheels 25 rolling along both guide rails 15.

One end of a support frame 9 constituting a part of the drilling machine main body 4 is pivotally connected to a front end of the movable frame 22 by a pivot 26, and the other end of the support frame 9 is connected to the movable frame. A tilting cylinder 27 for tilting the boring machine main body 4 in the up-down direction is interposed between the movable frame 22 and the center side of the base 22, and is movable between the movable frame 22 and the rear side connection frame 14 of the base 11. A frame moving cylinder 28 is interposed. In FIG. 3, the support frame 9 is illustrated in a single state separated from the guide cell 8. Each of the cylinders 27 and 28 is a hydraulic cylinder.

As the steel pipe forming the base 11, a scaffold steel pipe of a prescribed size used for a steel pipe scaffold for construction work is used. This is because when a ground drilling machine is installed on the site, a steel pipe scaffold is generally assembled and a base is fixed thereon, so that the base formed by the scaffold steel pipe like this base 11 is used. If the base 11 is fixed to the steel pipe scaffold, it can be easily and easily fixed by using a well-known scaffold clamp. Therefore, even if the base 11 is formed to be relatively lightweight, it can be fixed to the steel pipe scaffold. By fixing the external force, it is possible to sufficiently stably withstand the external force.

In the use of the ground drilling machine having the above-described structure, as shown in FIG. 1, the movable frame 22 is extended and contracted to move the movable frame 22 to the guide rails 15 of the base 11. The drilling machine body 4 is tilted about the pivotal joint (the pivot 26) between the movable frame 22 and the drilling machine body 4 by extending and retracting the tilting cylinder 27. Thus, the drilling machine main body 4 can be raised to a required height, and the inclination of the drilling machine main body 4 can be adjusted as desired.

Further, the drilling machine main body 4 is now in the inclined working posture as shown by the solid line in FIG. 1 and the movable frame 22 is at the front end side of the base 11 as shown by the solid line in FIG. When the center of gravity of the drilling machine main body 4 is located at the center in the front-rear direction of the base 11 and the base 11 is assumed to be stable, the inclination working posture of the drilling machine main body 4 is shown by a solid line in FIG. When the angle is also large, the center of gravity of the drilling machine main body 4 moves to the front side of the base 11. In this case, the movable frame moving cylinder 28 is contracted to move the movable frame 22 appropriately rearward. By doing so, the base 11 can be stabilized. In the case where the boring machine body 4 is to be drilled in a vertical posture, the movable frame 22 is moved to the rear end side of the base 11 as shown by the phantom line in FIG. Stability can be achieved.

In this ground drilling machine, the base 11 is appropriately moved along the guide rail 15 by the movable frame moving cylinder 28 in accordance with the inclination posture of the drilling machine main body 4 as described above. The base 11 can be stabilized by moving the center of gravity of the main body 4, and since the base 11 is entirely formed of steel pipes, the weight of the base 11 can be reduced as much as possible, and The weight of the entire machine can be reduced. Also, the pivoting part of the drilling machine main body 4 is
Unlike the conventional ground drilling machine, it is not fixed at a fixed position, but moves according to the working posture of the drilling machine main body 4, so that the base 11 is less likely to be damaged due to fatigue and the service life can be extended.

In this ground drill, the movable frame 22
Are moved by front, rear, left and right guide wheels 25 comprising a pair of upper and lower sandwiching rollers 24, 24, which respectively roll while sandwiching the steel pipe guide rails 15,
There is no need to provide a special guide rail on the base 11, and the steel pipe forming a part of the movable frame 22 can be used as a guide rail as it is, making it easy to manufacture and making each guide wheel 2
5 is composed of a pair of upper and lower sandwiching rollers 24, 24 for sandwiching the steel pipe guide rail 15, so that the movable frame 22 can be smoothly moved.

In this ground drilling machine, the base 1
Since a steel pipe for scaffolding of a prescribed size used for a steel pipe scaffold for construction work is used as the steel pipe forming 1, when installing a ground drilling machine on the site, when fixing a base on the steel pipe scaffold, The base 11 can be easily fixed to the steel pipe scaffold by using the scaffold clamp, and therefore, the operation of fixing the base 11 becomes very easy.

[0019]

According to the ground drilling machine of the first aspect, the base for supporting the drilling machine main body is bridged between the pair of left and right side frames, the pair of front and rear connecting frames, and the both front and rear connecting frames. A movable frame which is integrally formed with a pair of left and right guide rails, and which can be moved back and forth by being guided by the guide rails of the base, is provided with a boring machine body pivotally attached to a front end of the movable frame, and a boring machine. Since the tilting cylinder for tilting the main body is interposed between the drilling machine main body and the movable frame, and the movable frame moving cylinder is interposed between the movable frame and the rear connection frame of the base, Depending on the tilting posture of the drilling machine body,
By appropriately moving the base along the guide rails with the movable frame moving cylinder, the center of gravity of the drilling machine body 4 can be moved to stabilize the base, and the base is entirely made of steel pipe. Since it is formed, the weight of the base can be significantly reduced as compared with the conventional ground drilling machine, and the weight of the entire ground drilling machine can be greatly reduced. Also, since the pivoting part of the drilling machine main body is not fixed at a fixed position as in the conventional ground drilling machine and can be moved depending on the working posture of the drilling machine main body, there is little damage due to fatigue of the base, and it is used. Life can be extended.

According to the second aspect, it is not necessary to provide a special guide rail on the base, and the steel pipe forming a part of the movable frame can be used as the guide rail as it is, so that the manufacture becomes easy, and each guide wheel is further improved. Is composed of a pair of upper and lower sandwiching rollers for sandwiching the steel pipe guide rail, so that the movable frame can be smoothly moved, and there is no possibility that the movable frame will be detached, which is safe.

According to the third aspect, since the steel pipe forming the base is a steel pipe for a scaffold, when a ground drill is installed on a site, when the base is fixed on the steel pipe scaffold, a known scaffold clamp is used. By utilizing the base, the base can be easily fixed to the steel pipe scaffold, and the fixing work of the base is very easy, and even if the base is relatively lightweight, it can stably withstand external force.

[Brief description of the drawings]

FIG. 1 is a side view showing an entire ground drilling machine according to the present invention.

FIG. 2 is a partially omitted front view of the ground drilling machine shown in FIG.

FIG. 3 is a perspective view showing a base of the ground drilling machine shown in FIG. 1;

FIG. 4 is a side view showing a conventional ground drill.

[Explanation of symbols]

 Reference Signs List 4 drilling machine main body 11 base 12 side frame 13 front side connection frame 14 rear side connection frame 15 guide rail 22 movable frame 24 holding roller 25 guide wheel 26 pivot 27 tilting cylinder 28 movable frame moving cylinder

Claims (3)

[Claims] 1. A base for supporting a drilling machine main body includes a pair of left and right steel pipe side frames, a pair of front and rear steel pipe connection frames for connecting front and rear ends of both side frames, respectively, and both side frames. A movable frame which is integrally formed by a pair of left and right steel pipe guide rails bridged between the front and rear connection frames inside of the The drilling machine body is pivotally attached to the front end of the drilling machine, and a tilting cylinder for tilting the drilling machine body about the pivotal connection is interposed between the drilling machine body and the movable frame. A ground drilling machine with a movable frame moving cylinder interposed between the rear side connecting frame and the base. 2. The ground drilling machine according to claim 1, wherein the movable frame is provided with at least four front, rear, right and left guide wheels comprising a pair of upper and lower sandwiching rollers that sandwich and roll a steel pipe guide rail. 3. The ground drilling machine according to claim 1, wherein the steel pipe forming the side frame, the connection frame, and the guide rail is a scaffold steel pipe.